INFIQC   05475
INSTITUTO DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Unidad Ejecutora - UE
artículos
Título:
Theory of electrochemical monoatomic nanowires
Autor/es:
E.P.M. LEIVA; C.G. SÁNCHEZ; P. VÉLEZ; W. SCHMICKLER
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
The American Physical Society.
Referencias:
Año: 2006 vol. 74 p. 35422 - 35422
ISSN:
0163-1829
Resumen:
Monoatomic nanowires in contact with an electrolyte can be charged by varying their potential with respect to a reference electrode. The principal properties of such wires have been explored within a model in which the wire is represented as jellium, and the electrolyte is treated on the Poisson-Boltzmann level. In addition, ab initio calculations have been performed for the structure of monoatomic gold and silver wires. Due to the cylindrical geometry the interfacial capacity is much larger than for a planar geometry, and mass transport is enhanced. The work function is higher than for bulk electrodes, which entails a shift of the point of zero charge to high potentials. This should make it possible to reach very high negative charge densities on electrochemical nanowires. As a consequence, such wires may have different catalytic properties than bulk electrodes. (Las páginas de este artículo son 7 y van desde la 035422-1 hasta la 035422-7 pero el sistena no permite el ingreso de este número)